Comparative study of diode-pumped hydrocarbon free Rb and K vapor lasers

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• 作者：Fei Gao ; Fei Chen ; Jijiang Xie ; Dianjun Li ; Jingjiang Xie ; Guilong Yang ; Changbin Zheng ; Yan Xu ; Jin Guo
• 关键词：Diode-pumped alkali vapor laser ; Hydrocarbon free ; Kinetic model
• 刊名：Optics and Laser Technology
• 出版年：June, 2014
• 年：2014
• 卷：58
• 期：Complete
• 页码：166-171
• 全文大小：579 K

文摘

Based on the kinetic model of diode-pumped alkali vapor lasers, operation parameters including helium pressure, temperature and output mirror reflectivity are optimized for hydrocarbon free Rb laser and K laser. A comparative study on the output characteristics of hydrocarbon free Rb laser and K laser is also carried out. Results show that a better capability is presented in hydrocarbon free K laser instead of hydrocarbon free Rb laser, such as lower pump threshold, higher laser gain and optical-to-optical efficiency. The performance difference between K and Rb laser is mainly induced by the difference of helium pressure, which results in an evident difference on the absorption cross section and emission cross section.